木兰舟
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木兰舟
@LesserKhingan
From the Lesser Khingan range|Living in Northern Manchuria|History, music, books, video games|Unmanned systems engineer|INFJ-T |其实我不喜欢给人贴上标签| “夜未央,行行且行行”
Bergabung Ekim 2013
368 Mengikuti219 Pengikut
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Twitter的彩蛋也是Konami code
GIF
Proton Pass@Proton_Pass
It's not just for passwords; you can store so much stuff in Pass. Anyone remember this one?
日本語
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The World’s Largest Floating Dry Dock Was Towed Across the Atlantic to Bermuda in 1869 ...
When Britain needed a solution for ship repairs in the Atlantic, engineers in the 1860s built the largest floating dry dock ever attempted, a 380-foot iron structure weighing over 8,000 tons.
Constructed near Woolwich on the Thames, the dock was designed to lift 10,000-ton ironclads like HMS Warrior and withstand the fouling threats of Bermuda’s warm waters.
Unable to build a conventional dry dock due to porous sandstone, the British opted for mobility and scale, creating a self-contained U-shaped platform that could sink and raise vessels from the sea with ballast compartments and powerful pumps.
In June 1869, this massive dock embarked on a nearly 4,000-nautical-mile journey to Bermuda, towed in stages by Britain’s heaviest ironclads—Agincourt, Northumberland, Warrior, and Black Prince—assisted by HMS Terrible.
With closed ends to reduce drag and a sail rigged inside to capture tailwinds, the voyage reached speeds of over 6 knots.
Once in service, it supported Royal Navy operations for over thirty years before being replaced in 1906.
#archaeohistories

English
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